Platform cover turning device



Nov. 23, 1948. L'GALPER rwrponu COVER TURNING DEVICE Filed April 3, 1947 of & INVENTOR.

Patented Nov. 23, 1948 PLATFORM COVER TURNING DEVICE Isa Galper, Manchester, N. H., assignor to Bee Bee Shoe 00., Manchester, N. H., a corporation of New Hampshire Application April 3, 1947, Serial No. 739,103

4 Claims. (Cl. 12-1) This invention relates to Platform cover turning device and comprises a novel device for use in making shoes of the so-called California type wherein an upper and insole are united, off the last, together with a cover strip or binder designed to be wrapped around the periphery of a platform sole and later cemented to the bottom thereof. Ordinarily the cover strip is sewn into the seam joining the insole and upper in such position that it is presented inside out and eX- tending upwardly from the junction of the upper and insole roughly parallel to the lower part of the upper.

Hitherto the operation of turning the cover strip down has been attended by vexing difliculties, particularly at the toe end of the shoe where the outline curves abruptly. It is difiicult by hand to get a suflicient purchase on the cover strip and simultaneously swing the shoe in such a fashion as to reverse the cover strip and produce a neat, well-formed toe.

The most important object of my invention is to provide an eifective device for gripping and turning the cover strip and thus relieve the operator of the fatiguing work heretofore required of him for performing this shoemaking step.

Another object of the invention is to simplify the operation of forming the toe end of a California type shoe.

Still another object of my invention is to provide a simple, easily operated device for reversing the platform cover strip or binding of a shoe made according to the California type of process.

An important feature of my invention resides in the combination of a pair of cooperating jaws and a plate secured to one jaw and urged toward the other by spring loaded means, the plate being disposed to bear upon the sole of a shoe held at its toe by the jaws and providing a controlled thrust against which the operator may work to advantage in performing the operation of turning over the cover strip.

These and other objects and features of my invention will be more readily understood and appreciated from the following detailed description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which:

Fig. 1 is a view in side elevation of a device con structed in accordance with the invention and in which the jaws are shown as open to receive the work,

Fig. 2 is a view in side elevation showing a further stage in the operation of the device, and

Fig. 3 is a view in side elevation of the jaws and plate showing the final position of the parts.

The apparatus shown in the drawing includes a stout metal base plate [0 adapted to be secured to a vertical wall [2 and carrying a heavy bracket 14 extending outwardly from the plate I 0 to provide support for a lower bill-shaped jaw member l6 which is stationary and arranged to curve out and down from the bracket. A pivot pin I8 mounted at the root of the jaw I6 carries an upper jaw 20 curved to cooperate with the jaw iii to provide gripping pincers with vertically disposed cover-engaging faces. A tension spring 22 is secured at its ends to the plate I0 and the root of the upper jaw 20 and tends always to urge the pivoted upper jaw to open position with respect to the fixed lower jaw IS. The upper jaw tapers so that its end may easily be inserted in the narrow space between the toe of the upper and the upstanding binding strip.

Depending from the base of the upper jaw 20 is an arm 24 carrying at its lower end an eye in which one end of a wire cable 26 is anchored. The cable leads from the arm to a sheave 28 supported on the plate I!) and thence to a treadle (not shown) which may be actuated to pull the upper jaw into gripping engagement with the lower jaw against the force of the spring 22.

A lug 3U integral with the lower face of the jaw 16 at the tip thereof carries a pivot pin 33 on which swings another lug 32 integral with a flat metal plate 34 depending from the jaw IS. The plate 34 is about half as long as an average shoe and about as wide as the toe portion of the sole. A lug 36 integral with the plate 34 at its lower end carries a pivot pin 38 engaging the flattened end of a rod 40 which works in a sleeve 42 pivotally secured to a lug 44 on the base plate iii. A relatively heavy compression spring 46 is contained within the sleeve 42 and engages the rod 40, pushing it outwardly and thereby urging the plate 34 to swing counter-clockwise toward the upper jaw 20 and outwardly from the base plate [0.

I have shown, in Fig. l, a typical shoe in process of manufacture including an upper 48 sewn to an insole (not shown) with a cover or binding strip 52 caught in the insole seam and the whole assembled upon a conventional last 54. A platform sole 5!] has been cemented to the insole, and the next step in the shoemaking process is to pull the binding strip over the edge of the platform sole. The binding strip 52 is inside out, as presented, and stands upright, roughly paralleling the lower portion of the upper. The turning over or wrapping process in- 3 volves reversing the binding strip by rolling it over upon itself to conceal the seam and the edge of the platform sole and thus present a neat smooth appearance.

In operating the machine the operator first engages the toe end of the binding over the tip of the upper jaw 29, as clearly shown in Fig. 1. Then the treadle is operated to close the jaws and grip the binding strip, the parts then assuming the positions shown in Fig. 2. Finally the operator simultaneously swings the shoe and pulls it down until the plate 34 first meets and resists the swing and then ields to the thrust exerted by the operator. During the swing and pull the toe portion of the binding is turned over, the plate thrusts the toe end of the platform sole 50 firmly against the insole and binding, and the toe end is formedneatly, firmly, and quickly. Before the shoe is released the operator may conveniently turn down the remaining portion of the binding with his fingers. Subsequently the usual steps may be performed to complete the shoe. It will be seen that the binding strip is held by the pincer jaws while the shoe is swung about the tip of the closed jaws with the full leverage of the last in turning the binding strip over the margin of the platform sole.

The most important feature of the invention is the provision of means for first turning the "toe part of the binding and then pulling the binding firmly about the margin of the platform sole while the toe part of the platform is pressed tightly against the lasted shoe. I have found that the machine will perform operations practically simultaneously which hitherto required the services of two operators at separate stations.

The controlled thrust of the plate 34 produces two results. It steadies the shoe for the operator and levels it against twisting, giving him something definite to work against, and also presses the toe part of the platform sole in the desired manner with respect to the insole and binding strip. Furthermore the plate is so shaped and mounted that it cannot break or score the platform.

Having thus disclosed an illustrative embodiment of my invention what I claim as new and desire to secure by Letters Patent is:

1. A cover turning device, comprising a support, a lower jaw fixed to said support and presenting a substantially vertical cover-engaging face, an upper jaw pivotally mounted on the lower jaw, a, spring urging the jaws apart, treadle operated mechanism for closing the jaws against the spring, a wide fiat plate pivotally secured to the tip of the lower jaw, and spring-loaded mechanism urging said plate to swing toward the upper jaw.

2. A cover turning device comprising a support, a bracket secured to said support, a pair of jaws secured to said bracket and relatively movable to closed or open position, a plate pivotally mounted at the tip of one of the jaws and also F pivotally secured to said support, and means yieldingly resisting a thrust exerted to move said plate away from said jaws.

3. A cover turning device comprising a support, a bracket projecting from said support, a pair of hinged jaws secured to said bracket, means for opening and closing the jaws, a plate pivotally mounted on the tip of one of said jaws and extending beyond the jaw, a sleeve pivotally mounted on said support, a rod working in said sleeve and pivotally mounted on said plate, and a compression spring contained within the sleeve and urging the rod outwardly thereof.

4. Pincer mechanism for turning a binding strip in the manufacture of platform shoes, comprising a support, a pair of curved jaws extending outwardly and downwardly from the support and shaped to engage a binding strip presented thereto in substantially vertical position, and a fiat plate pivotally mounted on the tip of one jaw and located below the said jaws in position to be engaged by the bottom of a shoe when swung about the tip of the said jaws.

ISA GALPER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 958,286 Plant May 17, 1910 1,139,613 Wentworth May 18, 1915 2,289,634 Brothers Dec. 31, 1918 2,289,635 Stewart Dec. 31, 1918 

